Analysis and Evaluation on Combining Ability of 7 Corn Inbred Lines of Ludahongcob

For 7 Ludahongcob lines,35 hybridized combinations were made by using incomplete dual cross.It analyzed to GCA,SCA,TCA of plant height,ear height,ear length,ear diameter,kernel length,bald top length,100-kernel weight,forming kernel rate and grain weight per ear.The result indicated that the general characters of inbred lines J344,J390,Dan 340,Dan 8415 were better,they were fine inbred lines in hybrids were got,higher yield on these inbred lines were crossed.General characters of inbred line JL1 were worse,only after improved could be utilized.Some characters of the left lines were better,could be utilized by selection of parent in maize breeding.